3 ms·

I think this kind of client-side hashing and comparing to a database list is similar to the scanners at every Wal-Mart and the procedures at airports.

• josefx 5y ago
  I don't remember airport security scanners at my local supermarket.
  • ddtaylor 5y ago
    I think that fits into the category of the Wal-Mart scanners which are at many stores.